By________scientific rigor with a quantitative approach, researchers in the social sciences may often have________their scope to

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问题 By________scientific rigor with a quantitative approach, researchers in the social sciences may often have________their scope to whose narrowly circumscribed topics that are well suited to quantitative methods.

选项 A、undermining…diminished
B、equating…enlarged
C、vitiating…expanded
D、identifying…limited

答案D

解析 句意:通过科学而严格的计量方法的鉴定,社会科学家的研究范围被限定在可以运用计量方法的范围之内。identify鉴定。undermine破坏。diminish减少。equate等同。vitiate损坏。
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